Оценка малоцикловой усталости, поврежденности и остаточного ресурса ротора высокого давления турбины Т-100/120-130 ст. №1 ПАО "Харьковская ТЭЦ-5"
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Дата
2017
ORCID
DOI
10.20998/2078-774X.2017.10.04
Науковий ступінь
Рівень дисертації
Шифр та назва спеціальності
Рада захисту
Установа захисту
Науковий керівник
Члени комітету
Видавець
НТУ "ХПИ"
Анотація
Развитие централизованного теплоснабжения в крупных городах требует проводить оценку индивидуального ресурса каждого теплофикационного энергоблока после достижения им паркового ресурса. Проведена оценка и прогнозирование остаточного ресурса на базе 3D-пространственных аналогов для ротора высокого давления паровой турбины Т-100/120-130 энергоблока №1 ПАО "Харьковская ТЭЦ-5" с экспериментально полученными коэффициентами запаса прочности металла, а также с учетом реальных условий эксплуатации.
The development of centralized heat supply for large cities requires the estimation of the individual life of each cogeneration power unit that reached the economic life. To extend the service life of the cogeneration turbine Т-100/120-130 unit No 1 used by PJSC "Kharkiv CHPP-5" we analyzed the individual service life using the integrated approach. This approach combines the data of destructive and nondestructive metal examination with the strength and longevity verification computations and the detailed studies of each individual history of the unit operation. Based on the 3D spatial analogue of high pressure rotor and numerical experiment data on the estimation of thermal and stress-strain behavior the damageability of basic metal has been calculated. In the course of the estimation of low-cycle fatigue of high pressure rotor the values of the reduced amplitude of the strain intensity for the most loaded rotor sections were established. When determining the permissible number of start cycles in different thermal states the metal safety factors were experimentally calculated. The computations done showed that a degree of the wear of basic metal makes up 69 %. The metal examination data analysis for the high pressure rotor over the entire operation period is indicative of its satisfactory condition and together with the computation data allows for the extension of the service life of high pressure rotor by 50000 hours and a number of the starts should not exceed 558 starts.
The development of centralized heat supply for large cities requires the estimation of the individual life of each cogeneration power unit that reached the economic life. To extend the service life of the cogeneration turbine Т-100/120-130 unit No 1 used by PJSC "Kharkiv CHPP-5" we analyzed the individual service life using the integrated approach. This approach combines the data of destructive and nondestructive metal examination with the strength and longevity verification computations and the detailed studies of each individual history of the unit operation. Based on the 3D spatial analogue of high pressure rotor and numerical experiment data on the estimation of thermal and stress-strain behavior the damageability of basic metal has been calculated. In the course of the estimation of low-cycle fatigue of high pressure rotor the values of the reduced amplitude of the strain intensity for the most loaded rotor sections were established. When determining the permissible number of start cycles in different thermal states the metal safety factors were experimentally calculated. The computations done showed that a degree of the wear of basic metal makes up 69 %. The metal examination data analysis for the high pressure rotor over the entire operation period is indicative of its satisfactory condition and together with the computation data allows for the extension of the service life of high pressure rotor by 50000 hours and a number of the starts should not exceed 558 starts.
Опис
Ключові слова
централизованное теплоснабжение, ротор ВД, длительная прочность, РВД, коэффициент концентрации напряжений, centralized heat supply, high pressure rotor, cold start, warm start
Бібліографічний опис
Черноусенко О. Ю. Оценка малоцикловой усталости, поврежденности и остаточного ресурса ротора высокого давления турбины Т-100/120-130 ст. №1 ПАО "Харьковская ТЭЦ-5" / О. Ю. Черноусенко, В. А. Пешко // Вісник Нац. техн. ун-ту "ХПІ" : зб. наук. пр. Сер. : Енергетичні та теплотехнічні процеси й устаткування = Bulletin of the National Technical University "KhPI" : coll. works. Ser. : Power and Heat Engineering Processes and Equipment. – Харків : НТУ "ХПІ", 2017. – № 10 (1232). – С. 30-37.